Friday, 10 October 2014

 Hack an Website ? SQL Injection ? Very simple by Konduru Jashwanth
Are you looking for some useful tips to improve your web projects security? In this post I suggest you some interesting points about this topic.
Hacking is very interesting topic you can improve programming skill.
SQL Injection
SQL Injection like this
Login Java Code

String userid = request.getParameter(“userid”);
String password = request.getParameter(“password”);
connection = DriverManager.getConnection(“jdbc:odbc:projectDB”);query = “SELECT * FROM Users WHERE user_id =’” + userid + “‘ AND password =’” + password +”‘”;
PreparedStatement ps = connection.prepareStatement(query);
ResultSet users = ps.executeQuery();
//some thing here

Injection Works like this

query = “SELECT * FROM Users WHERE user_id =” OR 1=1; /* AND password =’*/–’”;
Login PHP Code;
Username = ‘ OR 1=1;//
Password = ….
$mypassword=$_POST['pwd'];$sql=”SELECT * FROM users WHERE user=’$myusername’ and password=’$mypassword’”;
//some code
else {

Injection Works like this

$sql=”SELECT * FROM users WHERE user=”OR 1 = 1;//’ and password=’….’”;
How to avoid these mistakes Use addSlashes() function adding slashes(/) to the string in java and php
//Java Code
addSlashes(String userid);// PHP Code
Hacker is intelligent than programmer. So always hide the file extension (eg: *.jsp,*.php,*.asp). to to
In Java redirect this URL links using Web.xml file and inn php write .htaccess file in root directory

any queries Comment or ping me



  1. Thank you.....@admin

  2. Thank you so much for giving such a details.
    It is nice post That contain the details of sql commends.
    Good post. Great job.

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  5. I admit, I have not been on this web page in a long time... however it was another joy to see It is such an important topic and ignored by so many, even professionals. I thank you to help making people more aware of possible issues. website improve

  6. very interesting blog.This will help lot of user to update their knowledge.Thanks for sharing.

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  8. Great post, and great website. Thanks for the information!

  9. Can you please the Login Java Code did not get these points other wise its appreciated.

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